ISL83220EIVZ

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High-efficiency synchronous buck regulator - Wide input voltage range - Adjustable output voltage - Low quiescent current - Overcurrent and overtemperature protection

Package: 20-Lead, 4mm x 4mm QFN package

Essence: The ISL83220EIVZ is a high-performance integrated circuit designed for power management applications. It offers a wide input voltage range and adjustable output voltage, making it suitable for various power supply designs.

Packaging/Quantity: The ISL83220EIVZ is available in a 20-Lead, 4mm x 4mm QFN package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 2A
• Quiescent Current: 18µA
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ISL83220EIVZ has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. EN: Enable pin
4. FB: Feedback pin
5. SS: Soft-start pin
6. PGND: Power ground
7. SW: Switch node
8. LX: Inductor connection

Functional Features

• High efficiency: The ISL83220EIVZ utilizes a synchronous buck regulator architecture, resulting in high conversion efficiency.
• Wide input voltage range: It can accept input voltages ranging from 2.7V to 5.5V, allowing for flexibility in power supply designs.
• Adjustable output voltage: The output voltage can be adjusted from 0.6V to the input voltage (VIN), providing versatility in different applications.
• Low quiescent current: With a quiescent current of only 18µA, the ISL83220EIVZ minimizes power consumption during standby or light load conditions.
• Overcurrent and overtemperature protection: The IC incorporates built-in protection mechanisms to safeguard against excessive current and temperature.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation and longer battery life. - Wide input voltage range allows for compatibility with various power sources. - Adjustable output voltage provides flexibility in meeting specific application requirements. - Low quiescent current minimizes power consumption during idle periods. - Built-in protection features enhance system reliability.

Disadvantages: - Limited maximum output current of 2A may not be suitable for high-power applications. - Operating temperature range of -40°C to +85°C may restrict usage in extreme environments.

Working Principles

The ISL83220EIVZ operates as a synchronous buck regulator, converting a higher input voltage to a lower output voltage efficiently. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switches accordingly. This control mechanism ensures a stable and accurate output voltage.

Detailed Application Field Plans

The ISL83220EIVZ is commonly used in various power management applications, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial equipment - Automotive electronics - IoT devices

Detailed and Complete Alternative Models

1. TPS54332: Synchronous step-down DC-DC converter with adjustable output voltage and wide input voltage range.
2. LT8610: High-efficiency synchronous buck regulator with adjustable output voltage and low quiescent current.
3. MAX17503: Integrated step-down DC-DC converter with wide input voltage range and high efficiency.

These alternative models offer similar features and can be considered as substitutes for the ISL83220EIVZ in power management applications.

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